A combined waterproof joint

Abstract

The utility model relates to waterproof joint sealing fixed technical field discloses a combined waterproof joint, including threaded post no.

Description

Technical Field

[0001] This utility model relates to the field of waterproof joint technology, and in particular to a combined waterproof joint. Background technology:

[0002] Waterproof connectors are key components used in outdoor electrical equipment and wiring connections in humid environments. Their core function is to prevent moisture and dust from penetrating the connector through structural design, ensuring the stability and safety of the conductive connection. In industrial automation, new energy equipment, and shipbuilding, wiring often needs to operate in rainy and water-related environments. The performance of waterproof connectors directly affects the reliability and service life of the equipment. These connectors need to balance conductivity, mechanical strength, and sealing effect. Their structural design needs to balance ease of connection with waterproof durability. They are an indispensable basic component in electrical connection systems.

[0003] Early waterproof joints mostly used a single threaded connection with a single-layer sealing ring, achieving a seal by tightening the nut to compress the sealing ring. However, this structure has significant drawbacks: firstly, single-layer seals are prone to leakage due to aging of the sealing ring and thread gaps; secondly, under long-term vibration and temperature changes, the threaded fit between the nut and the body will gradually loosen, resulting in a very high risk of seal failure. With technological improvements, current waterproof joints generally adopt a multi-layer sealing design, enhancing the engagement through the serrated threads of the waterproof nut and the body. Although this structure improves initial waterproofing by increasing the number of sealing layers and thread friction, Yes, but there are still key issues in long-term use: Existing waterproof nuts rely on thread preload to press the seal together. When the equipment continues to operate and generates vibrations, the metal threads of the nut and the body will wear due to high-frequency vibration friction. Stress relaxation will occur due to thermal expansion and contraction, which will cause the nut to loosen. Once the nut loosens, the seal at the connection will be under uneven pressure, and moisture will seep into the joint along the thread gap, eventually causing short circuits and poor contact. Especially in scenarios with frequent vibrations, such as construction machinery and offshore wind power, this problem leads to a significant increase in the frequency of joint maintenance and can become a major cause of equipment failure. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a combined waterproof connector, which aims to improve the problem in the prior art where the nut is loose, the seal at the connection is not under uniform pressure, and water seeps into the interior of the connector along the thread gap.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a combined waterproof connector, including a threaded post one, a fixing sleeve one threadedly connected to the top of the threaded post one, a fixing sleeve two threadedly connected to the bottom of the threaded post one, a fixing mechanism provided on the outer wall of the fixing sleeve one, and a clamping mechanism provided inside the threaded post one.

[0006] The fixing mechanism includes multiple fixing plates, which are respectively disposed around the outer wall of the threaded column one. Each of the multiple fixing plates has a screw one threadedly connected to its top and a screw two threadedly connected to its bottom. Each of the outer walls of the fixing sleeve one has a threaded hole one, and each of the outer walls of the fixing sleeve two has a threaded hole two. Each adjacent end of each of the screw one is threadedly connected to the corresponding threaded hole one, and each adjacent end of each of the screw two is threadedly connected to the corresponding threaded hole two. Each of the outer walls has a threaded hole three.

[0007] As a further description of the above technical solution:

[0008] The clamping mechanism includes multiple screws three, the outer walls of the multiple screws three are respectively threaded to the inner wall of the threaded post one, a washer one is fixedly connected to the far end of the multiple screws three, and an arc plate is rotatably connected to the adjacent end of the multiple screws three.

[0009] As a further description of the above technical solution:

[0010] The outer wall of the fixed sleeve is provided with a washer groove, the inner wall of the washer groove is slidably connected with a washer, and the bottom of the threaded column is fixedly connected with a sealing ring.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the threaded column is provided with a threaded groove, and the inner wall of the fixed sleeve is fixedly connected with a gasket.

[0013] As a further description of the above technical solution:

[0014] The top of the second gasket is fixedly connected to the first gasket, and the outer wall of the first fixing sleeve is slidably connected to a dust cap.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the second fixing sleeve is provided with anti-slip textures around its perimeter, and the spacing between adjacent anti-slip textures is equal.

[0017] As a further description of the above technical solution:

[0018] The radius of the first fixing sleeve is smaller than the radius of the second fixing sleeve, and the size of the first screw is larger than the size of the second screw.

[0019] As a further description of the above technical solution:

[0020] The plurality of screws are arranged in a ring around the center of the threaded post, and the surfaces of the plurality of screws are all treated with anti-corrosion measures.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the fixing plate is distributed around the outer wall of the threaded column one, the top screw one is connected to the threaded hole one of the fixing sleeve one, and the bottom screw two is connected to the threaded hole two of the fixing sleeve two. The traditional single-point fixing is transformed into planar constraint, so that the relative positions of the fixing sleeve one, the fixing sleeve two and the threaded column one are locked in multiple ways, effectively resisting loosening caused by vibration.

[0023] 2. In this utility model, the arc plate is connected to the screw, and the fitting angle can be adjusted according to the outer circle contour of the wire to achieve surface contact clamping. The screw's outer wall and the inner wall of the threaded column are connected by threads, and the washer increases the operating contact area, which facilitates the application of a stable preload force, ensuring that the wire is reliably fixed and has no axial displacement. The amount of wire displacement is reduced compared with traditional designs in vibration environments. Attached Figure Description

[0024] Figure 1 This is a perspective view of a combined waterproof connector proposed in this utility model;

[0025] Figure 2 This is a front view of a combined waterproof connector proposed in this utility model;

[0026] Figure 3 This is a partial structural diagram of a combined waterproof connector proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of a clamping mechanism for a combined waterproof connector proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of a fixing mechanism for a combined waterproof connector proposed in this utility model;

[0029] Figure 6 This is an exploded view of a combined waterproof connector proposed in this utility model.

[0030] Legend:

[0031] 1. Threaded post one; 2. Fixing mechanism; 201. Fixing plate; 202. Screw one; 203. Screw two; 204. Threaded hole one; 205. Threaded hole two; 3. Clamping mechanism; 301. Screw three; 302. Washer one; 303. Arc plate; 4. Fixing sleeve one; 5. Fixing sleeve two; 6. Washer two; 7. Washer groove; 8. Threaded groove one; 9. Threaded hole three; 10. Gasket one; 11. Gasket two; 12. Dust cap; 13. Anti-slip texture; 14. Sealing ring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 5 and Figure 6 This utility model provides an embodiment of a combined waterproof connector, including a threaded post 1, a fixing sleeve 4 threadedly connected to the top of the threaded post 1 to provide a stable installation base and support for subsequent components, a fixing sleeve 5 threadedly connected to the bottom of the threaded post 1 to seal the connector and ensure no water leakage, a fixing mechanism 2 provided on the outer wall of the fixing sleeve 4 to ensure that the combined connector will not loosen during long-term operation, a clamping mechanism 3 provided inside the threaded post 1 to stabilize the wire when it passes through during normal operation, and threaded holes 9 provided around the outer wall of the threaded post 1 to fix other components. The threaded post 1 serves as the main support structure, providing an installation base for the fixing sleeve 4, the fixing sleeve 5 and the clamping mechanism 3, and the threaded holes 9 are used for subsequent connection with external components to achieve overall fixation.

[0034] The fixing mechanism 2 includes multiple fixing plates 201, which are respectively disposed around the outer wall of the threaded post 1. These plates provide circumferential support and constraint for the threaded post 1, the fixing sleeve 4, and the fixing sleeve 5 through a circumferential distribution. Each fixing plate 201 has a screw 202 threadedly connected to its top, connecting the top of the fixing plate 201 to the threaded hole 204 of the fixing sleeve 4 for upper fixing. Each fixing plate 201 has a screw 203 threadedly connected to its bottom, connecting the bottom of the fixing plate 201 to the threaded hole 205 of the fixing sleeve 5 for lower fixing. The outer walls of the first sleeve 4 are provided with threaded holes 204 for engaging with the threads of screws 202 to support the top connection force of the fixing plate 201. The outer walls of the second fixing sleeve 5 are provided with threaded holes 205 for engaging with the threads of screws 203 to support the bottom connection force of the fixing plate 201. The outer walls of the second fixing sleeve 5 are provided with anti-slip textures 13 to increase the grip friction during installation or removal, prevent slippage, and improve ease of operation. The adjacent ends of multiple screws 202 are threaded into the corresponding threaded holes 204 to connect the top of the fixing plate 201 to the fixing plate 201. The first sleeve 4 is securely locked, and the adjacent ends of multiple screws 203 are respectively threaded into the corresponding threaded holes 205 to securely lock the bottom of the fixing plate 201 to the fixing sleeve 5. The fixing plate 201 is connected to the threaded holes 204 of the fixing sleeve 4 and 205 of the fixing sleeve 5 by screws 202 and 203 respectively, to fix the relative position of the fixing sleeves 4 and 5 and the threaded post 1, so as to prevent the fixing sleeves 4 and 5 from loosening due to vibration during long-term use. The outer wall of the fixing sleeve 4 is provided with a washer groove 7 to provide a positioning space for the washer 6. The inner wall of the gasket groove 7 is slidably connected with a second gasket 6, which is used to fill the gap between the contact surface when the fixed sleeve 4 is connected to the external equipment, eliminate the sealing blind zone and improve the contact tightness. The bottom of the threaded column 1 is fixedly connected with a sealing ring 14, which is used to fill the interface gap through elastic deformation when the fixed sleeve 4 is connected to the external equipment. The second gasket 6 is set in the gasket groove 7, which is used to fill the gap between the contact surface when the fixed sleeve 4 is connected to the external equipment. The sealing ring 14 is set at the bottom of the threaded column 1, which is used to enhance the sealing performance at the connection between the threaded column 1 and the fixed sleeve 2, so as to achieve the waterproof function of the overall structure.

[0035] Specifically, the threaded column 1 serves as the main support structure, with a threaded connection at the top to the fixing sleeve 4 and a threaded connection at the bottom to the fixing sleeve 5, providing an installation base for both and the clamping mechanism 3. The threaded hole 9 on its outer wall is used to connect with external components for overall fixation. Multiple fixing plates 201 of the fixing mechanism 2 are arranged around the outer wall of the threaded column 1, and are connected to the fixing sleeve 4 by a screw 202 at the top and a screw 203 at the bottom, which in turn connects to the fixing sleeve 5 by a threaded hole 205. This connects the fixing sleeve 4, the fixing sleeve 5, and the threaded column. The relative position of the first and second fixed sleeves is fixed to prevent loosening due to vibration during long-term use; the anti-slip texture 13 on the outer wall of the second fixed sleeve 5 facilitates installation and disassembly; the gasket groove 7 on the outer wall of the first fixed sleeve 4 positions and installs the second gasket 6, which fills the gap of the contact surface when connected to external equipment; the sealing ring 14 at the bottom of the threaded column 1 fills the interface gap through elastic deformation; the two work together to enhance the sealing of the connection between the threaded column 1 and the second fixed sleeve 5, and achieve the overall waterproof function; the clamping mechanism 3 inside the threaded column 1 stabilizes the wire when the wire is passing through normally, and the waterproof performance is stable.

[0036] Reference Figure 2 , Figure 3 and Figure 6 The clamping mechanism 3 includes multiple screws 301, the outer walls of which are threaded to the inner walls of the threaded post 1, for mounting the clamping mechanism 3 inside the threaded post 1. This structural design ensures that the clamping mechanism 3 is securely installed inside the main body, preventing easy displacement during operation. Washers 302 are fixedly connected to the far ends of the multiple screws 301 to increase the contact area between the screws 301 and external operating tools, facilitating rotation of the screws 301 and effectively improving the operator's ease and efficiency in operating the screws 301. An arc-shaped plate 303 is rotatably connected to the adjacent ends of the multiple screws 301 for... When screw 301 rotates, it moves with the screw and clamps and fixes the wire, which can achieve stable and reliable clamping of the wire and ensure the wire is secure in the connector. The outer wall of the threaded column 1 has a threaded groove 8, which is used to engage with the threaded inner wall of the fixed sleeve 2 5 to realize the threaded connection between the threaded column 1 and the fixed sleeve 2 5. This threaded connection provides a stable and detachable connection structure for both. The inner wall of the fixed sleeve 2 5 is fixedly connected with a gasket 2 11, which is used to enhance the sealing of the connection when the fixed sleeve 2 5 is connected to the threaded column 1, so as to prevent liquid from seeping in from the connection between the fixed sleeve 2 5 and the threaded column 1, which greatly improves the waterproof performance of the connector at this part.

[0037] Specifically, in the combined waterproof connector, the threaded post 1 serves as the basic structure. The threads on its inner wall are used to connect with multiple screws 301, securely mounting the clamping mechanism 3 inside and providing support for subsequent wire clamping. The washer 302 at the end of screw 301 furthest from the other end increases the contact area with the operating tool, facilitating the operator to rotate screw 301 and adjust the clamping force. The arc-shaped plate 303, rotatably connected to the adjacent end of screw 301, moves with screw 301 as it rotates, clamping and fixing the wire by adjusting the spacing, ensuring the wire is securely held in place within the connector. The internal structure operates stably. Simultaneously, the threaded groove 8 on the outer wall of the threaded column 1 and the thread on the inner wall of the fixed sleeve 2 5 cooperate with each other to achieve a threaded connection between the threaded column 1 and the fixed sleeve 2 5, forming a stable and detachable overall structure. The gasket 2 11 on the inner wall of the fixed sleeve 2 5 fills the gaps during the connection process, enhancing the sealing of the connection and preventing liquid from seeping in from the connection between the fixed sleeve 2 5 and the threaded column 1. All components work together through threaded and rotating connections, which not only achieves a stable clamping of the wire but also ensures the waterproof performance of the connector, ensuring the stable and reliable operation of the combined waterproof connector.

[0038] Reference Figure 1 and Figure 4Gasket 10 is fixedly connected to the top of gasket 2 11. Dust cap 12 is slidably connected to the outer wall of fixing sleeve 4. The radius of fixing sleeve 4 is smaller than the radius of fixing sleeve 2 5. The size of screw 202 is larger than the size of screw 203. Multiple screws 301 are arranged in a ring around the center of threaded post 1. The surfaces of multiple screws 301 are all treated with anti-corrosion coating. Gasket 10 is fixedly connected to the top of gasket 2 11 to form a double sealing structure with gasket 2 11. By increasing the number of sealing layers... This design enhances the sealing performance between the threaded post 1 and the external environment, effectively preventing liquid from seeping in from the connection between the fixed sleeve 2 5 and the threaded post 1. The dust cap 12 is slidably connected to the outer wall of the fixed sleeve 4, covering the port of the fixed sleeve 4 when the connector is not connected to external equipment. This physical barrier prevents liquid from entering the connection area between the fixed sleeve 4 and the external equipment, avoiding poor contact due to contamination. The radius of the fixed sleeve 4 is smaller than that of the fixed sleeve 2 5, creating a stepped difference in outer diameter between them. To facilitate quick identification of the upper and lower connection ends of the connector by installers, and to adapt to the space requirements of compact upper connection and stable lower support in different installation scenarios; the size of screw 202 is larger than that of screw 203, so that screw 202 can bear the main axial tightening force of fixing mechanism 2, matching the greater tensile force borne by fixing sleeve 4 when connected at the top, while screw 203 assists in fixing fixing sleeve 25. Through differentiated design, the force of the upper and lower fixing points is balanced, improving the reliability of the overall connection; multiple screws 301 are arranged in a ring around the center of threaded post 1, so that multiple arc plates 303 are symmetrically distributed around the inner wall of threaded post 1. When screws 301 are rotated, each arc plate 303 moves synchronously towards the center and clamps the wire evenly, avoiding wire displacement caused by uneven clamping force. The surfaces of multiple screws 301 are treated with anti-corrosion, so as to form an anti-corrosion protective layer on the screw surface through plating and spraying processes, so that it resists oxidation and rust in humid and corrosive environments, extends the service life of clamping mechanism 3 and ensures the convenience of long-term disassembly and maintenance;

[0039] Specifically, gasket 10 is fixedly connected to the top of gasket 21, forming a double-sealed structure with the two stacked on top of each other. This improves the sealing performance between the inside and outside environment of threaded post 11, preventing liquid from seeping in from the connection between fixed sleeve 25 and threaded post 11. Dust cap 12 is slidably connected to the outer wall of fixed sleeve 4, covering the port when the joint is not connected to external equipment, preventing dust and liquid from entering the connection area and avoiding poor contact due to contamination. The radius of fixed sleeve 4 is smaller than that of fixed sleeve 25, forming a stepped outer diameter difference, which makes it easier for installers to distinguish the upper and lower connection ends of the joint, adapting to the space requirements of compact upper connection and stable lower support in different installation scenarios. Screw 202 is larger than screw 203, so that screw 202 bears the responsibility of fixing mechanism 2. The main axial fastening force matches the greater tensile force borne by the fixing sleeve 1 4 when connected at the top. The screw 203 assists in fixing the fixing sleeve 2 5, achieving balanced force distribution at the upper and lower fixing points and improving the overall reliability of the connection. Multiple screws 301 are arranged in a ring around the center of the threaded column 1, so that multiple arc plates 303 are symmetrically distributed around the inner wall of the threaded column 1. When rotating the screws 301, each arc plate 303 moves synchronously towards the center and clamps the wire evenly, avoiding wire displacement caused by uneven clamping force. The surfaces of multiple screws 301 are treated with anti-corrosion, forming an anti-corrosion protective layer on the screw surface, which resists oxidation and rust in humid and corrosive environments, extends the service life of the clamping mechanism 3, and ensures the convenience of long-term disassembly and maintenance.

[0040] Working principle: The fixing plate 201 is fitted into the middle of the threaded column 1 and is connected to the external base through a double screw set: Screw 202 passes through the threaded hole 204 of the fixing plate 201 and connects with the pre-embedded screw hole of the external component to form a horizontal circumferential limit; Screw 203 passes through the threaded hole 205 and is perpendicular to the force direction of screw 202, forming an orthogonal constraint on the fixing plate 201.

[0041] Furthermore, the uniformly distributed design of the ring screw 301 ensures that the arc plate 303 applies clamping force synchronously from multiple directions, forming a uniform wrap. The contact point of the tightening claw covers the circumference of the wire, avoiding local stress from exceeding the tolerance limit of the wire insulation layer. The sealing washer 302 and the arc plate 303 are linked through the inclined surface mechanism of the same driving component, so that the sealing process and the clamping process are completed synchronously.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combined waterproof joint, comprising a threaded post (1), characterized in that: The top of the threaded column (1) is threadedly connected to a fixing sleeve (4), the bottom of the threaded column (1) is threadedly connected to a fixing sleeve (5), the outer wall of the fixing sleeve (4) is provided with a fixing mechanism (2), the inside of the threaded column (1) is provided with a clamping mechanism (3), and the outer wall of the (1) is provided with threaded holes (9) on all four sides. The fixing mechanism (2) includes multiple fixing plates (201), which are respectively disposed around the outer wall of the threaded column (1). Each of the multiple fixing plates (201) has a screw (202) threaded to its top and a screw (203) threaded to its bottom. Each of the multiple fixing plates (201) has a threaded hole (204) around its outer wall and a threaded hole (205) around its outer wall. Each of the multiple fixing sleeves (4) has a threaded hole (205) around its outer wall. Each adjacent end of each of the multiple screws (202) is threaded to the corresponding threaded hole (204), and each adjacent end of each of the multiple screws (203) is threaded to the corresponding threaded hole (205).

2. The combined waterproof joint according to claim 1, characterized in that: The clamping mechanism (3) includes a plurality of screws (301), the outer walls of the plurality of screws (301) are respectively threaded around the inner wall of the threaded post (1), a washer (302) is fixedly connected to one of the distant ends of the plurality of screws (301), and an arc plate (303) is rotatably connected to one of the adjacent ends of the plurality of screws (301).

3. The combined waterproof joint according to claim 1, characterized in that: The outer wall of the fixed sleeve (4) is provided with a washer groove (7), the inner wall of the washer groove (7) is slidably connected with a washer (6), and the bottom of the threaded column (1) is fixedly connected with a sealing ring (14).

4. The combined waterproof joint according to claim 1, characterized in that: The outer wall of the threaded column (1) is provided with a threaded groove (8), and the inner wall of the fixed sleeve (5) is fixedly connected with a gasket (11).

5. A combined waterproof connector according to claim 4, characterized in that: The top of the second gasket (11) is fixedly connected to the first gasket (10), and the outer wall of the first fixing sleeve (4) is slidably connected to the dust cap (12).

6. A combined waterproof joint according to claim 1, characterized in that: The outer wall of the fixed sleeve 2 (5) is provided with anti-slip textures (13) around its perimeter, and the spacing between adjacent anti-slip textures (13) is equal.

7. A combined waterproof connector according to claim 1, characterized in that: The radius of the first fixing sleeve (4) is smaller than the radius of the second fixing sleeve (5), and the size of the first screw (202) is larger than the size of the second screw (203).

8. A combined waterproof joint according to claim 2, characterized in that: The plurality of screws three (301) are arranged in a ring array with the center of the threaded post one (1) as the center, and the surfaces of the plurality of screws three (301) are all treated with anti-corrosion.

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